高性能減水剤 こうせいのうげんすいざい Meanings Noun superplasticizer Kanji 高 high. Read as コウ. 性 nature. Read as セイ. 能 ability. Read as ノウ. 減 decrease. Read as ゲン. 水 water. Read as スイ. 剤 agent. Read as ザイ. Jinuma: Japanese Dictionary · Word lists